Zobrazeno 71 - 80
of 324
pro vyhledávání: '"Guainazzi, Matteo"'
Autor:
Matt, Giorgio, Bianchi, Stefano, Guainazzi, Matteo, Longinotti, Anna Lia, Dadina, Mauro, Karas, Vladimir, Malaguti, Giuseppe, Miniutti, Giovanni, Petrucci, Pierre Olivier, Piconcelli, Enrico, Ponti, Gabriele
In about half of Seyfert galaxies, the X-ray emission is absorbed by an optically thin, ionized medium, the so-called "Warm Absorber", whose origin and location is still a matter of debate. The aims of this paper is to put more constraints on the war
Externí odkaz:
http://arxiv.org/abs/1107.1085
We are carrying out a search for all radio loud Active Galactic Nuclei observed with XMM-Newton, including targeted and field sources to perform a multi-wavelength study of these objects. We have cross-correlated the Veron-Cetty & Veron (2010) catalo
Externí odkaz:
http://arxiv.org/abs/1009.6149
Autor:
Tsujimoto, Masahiro, Guainazzi, Matteo, Plucinsky, Paul P., Beardmore, Andrew P., Ishida, Manabu, Natalucci, Lorenzo, Posson-Brown, Jennifer L. L., Read, Andrew M., Saxton, Richard D., Shaposhnikov, Nikolai V.
Context. The Crab nebula has been used as a celestial calibration source of the X-ray flux and spectral shape for many years by X-ray astronomy missions. However, the object is often too bright for current and future missions equipped with instrument
Externí odkaz:
http://arxiv.org/abs/1009.2812
Autor:
Siemiginowska, Aneta, Czerny, Bozena, Janiuk, Agnieszka, Stawarz, Lukasz, Guainazzi, Matteo, Celotti, Annalisa, Migliori, Giulia, Tengstrand, Olaf
Large scale X-ray jets that extend to >100 kpc distances from the host galaxy indicate the importance of jets interactions with the environment on many different physical scales. Morphology of X-ray clusters indicate that the radio-jet activity of a
Externí odkaz:
http://arxiv.org/abs/1003.0129
Autor:
Bianchi, Stefano, Chiaberge, Marco, Evans, Daniel A., Guainazzi, Matteo, Baldi, Ranieri D., Matt, Giorgio, Piconcelli, Enrico
We present a detailed analysis of the XMM-Newton RGS high resolution X-ray spectra of the Seyfert 2 galaxy, Mrk573. This analysis is complemented by the study of the Chandra image, and its comparison to optical (HST) and radio (VLA) data. The soft X-
Externí odkaz:
http://arxiv.org/abs/1002.0800
Publikováno v:
Astron.Astrophys.512:A62,2010
X-ray observations of unabsorbed active galactic nuclei provide an opportunity to explore the innermost regions of supermassive black hole accretion discs. Our goal in this paper is to investigate the central environment of a Seyfert 1.5 galaxy IRAS
Externí odkaz:
http://arxiv.org/abs/0912.5165
Autor:
Evans, Daniel A., Ogle, Patrick M., Marshall, Herman L., Nowak, Mike A., Bianchi, Stefano, Guainazzi, Matteo, Longinotti, Anna Lia, Dewey, Dan, Schulz, Norbert S., Noble, Mike S., Houck, John, Canizares, Claude R.
We present initial results from a new 440-ks Chandra HETG GTO observation of the canonical Seyfert 2 galaxy NGC 1068. The proximity of NGC 1068, together with Chandra's superb spatial and spectral resolution, allow an unprecedented view of its nucleu
Externí odkaz:
http://arxiv.org/abs/0911.0374
Autor:
Evans, Daniel A., Ogle, Patrick M., Marshall, Herman L., Nowak, Mike A., Bianchi, Stefano, Guainazzi, Matteo, Longinotti, Anna Lia, Dewey, Dan, Schulz, Norbert S., Noble, Mike S., Houck, John, Canizares, Claude R.
We present initial results from a new 440-ks Chandra HETG GTO observation of the canonical Seyfert 2 galaxy NGC 1068. The proximity of NGC 1068, together with Chandra's superb spatial and spectral resolution, allow an unprecedented view of its nucleu
Externí odkaz:
http://arxiv.org/abs/0910.3023
Autor:
Bianchi, Stefano, Matt, Giorgio, Tamborra, Francesco, Chiaberge, Marco, Guainazzi, Matteo, Marinucci, Andrea
The soft X-ray emission in obscured active galactic nuclei (AGN) is dominated by emission lines, produced in a gas photoionized by the nuclear continuum and likely spatially coincident with the optical narrow line region (NLR). However, a fraction of
Externí odkaz:
http://arxiv.org/abs/0905.4845
We presented CAIXA, a Catalogue of AGN in the XMM-Newton Archive, in a companion paper. Here, a systematic search for correlations between the X-ray spectral properties and the multiwavelength data was performed for the sources in CAIXA. All the sign
Externí odkaz:
http://arxiv.org/abs/0905.0267